FD ISO/TR 15144-1

FD ISO/TR 15144-1

May 2011
Published document Cancelled

Calculation of micropitting load capacity of cylindrical spur and helical gears - Part 1 : introduction and basic principles

ISO/TR 15144-1:2010 describes a procedure for the calculation of the micropitting load capacity of cylindrical gears with external teeth. It has been developed on the basis of testing and observation of oil-lubricated gear transmissions with modules between 3 mm and 11 mm and pitch line velocities of 8 m/s to 60 m/s. However, the procedure is applicable to any gear pair where suitable reference data is available, providing the criteria specified below are satisfied. The formulae specified are applicable for driving as well as for driven cylindrical gears with tooth profiles in accordance with the basic rack specified in ISO 53. They are also applicable for teeth conjugate to other basic racks where the virtual contact ratio is less than 2,5. The results are in good agreement with other methods for normal working pressure angles up to 25°, reference helix angles up to 25° and in cases where pitch line velocity is higher than 2 m/s. ISO/TR 15144-1:2010 is not applicable for the assessment of types of gear tooth surface damage other than micropitting.

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Main informations

Collections

National standards and national normative documents

Publication date

May 2011

Number of pages

61 p.

Reference

FD ISO/TR 15144-1

ICS Codes

21.200   Gears

Classification index

E23-031-1

Print number

1 - 27/05/2011

International kinship

ISO/TR 15144-1:2010
Sumary
Calculation of micropitting load capacity of cylindrical spur and helical gears - Part 1 : introduction and basic principles

ISO/TR 15144-1:2010 describes a procedure for the calculation of the micropitting load capacity of cylindrical gears with external teeth. It has been developed on the basis of testing and observation of oil-lubricated gear transmissions with modules between 3 mm and 11 mm and pitch line velocities of 8 m/s to 60 m/s. However, the procedure is applicable to any gear pair where suitable reference data is available, providing the criteria specified below are satisfied.

The formulae specified are applicable for driving as well as for driven cylindrical gears with tooth profiles in accordance with the basic rack specified in ISO 53. They are also applicable for teeth conjugate to other basic racks where the virtual contact ratio is less than 2,5. The results are in good agreement with other methods for normal working pressure angles up to 25°, reference helix angles up to 25° and in cases where pitch line velocity is higher than 2 m/s.

ISO/TR 15144-1:2010 is not applicable for the assessment of types of gear tooth surface damage other than micropitting.

Standard replaced by (1)
FD ISO/TR 15144-1
December 2014
Published document Cancelled
Calculation of micropitting load capacity of cylindrical spur and helical gears - Part 1 : introduction and basic principles

<p>ISO/TR 15144-1:2014 describes a procedure for the calculation of the micropitting load capacity of cylindrical gears with external teeth. It has been developed on the basis of testing and observation of oil-lubricated gear transmissions with modules between 3 mm and 11 mm and pitch line velocities of 8 m/s to 60 m/s. However, the procedure is applicable to any gear pair where suitable reference data are available, provided the criteria specified below are satisfied.</p> <p>The formulae specified are applicable for driving, as well as for driven cylindrical gears with tooth profiles in accordance with the basic rack specified in ISO 53. They are also applicable for teeth conjugate to other basic racks where the virtual contact ratio is less than <i>ε</i><sub>αn</sub> = 2,5. The results are in good agreement with other methods for normal working pressure angles up to 25°, reference helix angles up to 25°, and in cases where pitch line velocity is higher than 2 m/s.</p> <p>ISO/TR 15144-1:2014 is not applicable for the assessment of types of gear tooth surface damage other than micropitting.</p>

Table of contents
View the extract
  • Avant-propos
    v
  • Introduction
    vi
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes, définitions, symboles et unités
    2
  • 4 Définition des micropiqûres
    5
  • 5 Formules de base
    5
  • 6 Paramètre de matériau GM
    9
  • 7 Paramètre de vitesse UY
    10
  • 8 Paramètre de charge WY
    12
  • 9 Paramètre de glissement SGF,Y
    14
  • 10 Définition du point de contact Y sur la ligne de conduite
    15
  • 11 Facteur de répartition de charge XY
    18
  • 12 Température de contact thêta B,Y
    25
  • 13 Température-éclair thêta n,Y
    25
  • 14 Température de masse thêta M
    26
  • Annexe A (informative) Calcul de l'épaisseur admissible du film lubrifiant spécifique lambda GFP pour les huiles donnant un résultat d'essai de micropiqûres conforme à la Fiche d'information
  • FVA n° 5417
    31
  • Annexe B (informative) Exemple de calcul
    33
  • Bibliographie
    55
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